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首页> 外文期刊>Applied Surface Science >A comparison of the characteristics of excimer and femtosecond laser ablation of acrylonitrile butadiene styrene (ABS)
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A comparison of the characteristics of excimer and femtosecond laser ablation of acrylonitrile butadiene styrene (ABS)

机译：准分子和飞秒激光烧蚀丙烯腈丁二烯苯乙烯（ABS）特性的比较

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摘要

This paper presents an investigation on the ablation characteristics of excimer laser (lambda = 248 nm, tau =15 ns) and femtosecond laser (lambda = 800 nm, tau = 100 fs) on ABS polymer sheets. The laser-material interaction parameters (ablation threshold, optical penetration depth and incubation factor) and the changes in material chemical properties were evaluated and compared between the two lasers. The work shows that the ablation threshold and effective optical penetration depth values are dependent on the wavelength of laser beam (photon energy) and the pulse width. The ablation threshold value is lower for the excimer laser ablation of ABS (F-th = 0.087 J/cm(2)) than that for the femtosecond laser ablation of ABS (F-th =1.576 J/cm(2)), demonstrating a more dominating role of laser wavelength than the pulse width in influencing the ablation threshold. The ablation depth versus the logarithmic scale of laser fluence shows two linear regions for the fs laser ablation, not previously known for polymers. The effective optical penetration depth value is lower for excimer laser ablation (alpha(-1) = 223 nm) than that for femtosecond laser ablation (alpha(-1) = 2917 nm). The ablation threshold decreases with increasing number of pulses (NOP) due to the chain scission process that shortens the polymeric chains, resulting in a weaker polymeric configuration and the dependency is governed by the incubation factor. Excimer laser treatment of ABS eliminates the C=C bond completely through the chain scission process whereas C=C bond is partially eliminated through the femtosecond laser treatment due to the difference in photon energy of the two laser beams. A reduction in the C=C bond through the chain scission process creates free radical carbons which then form crosslinks with each other or react with oxygen, nitrogen and water in air producing oxygen-rich (C-0 and C=0 bond) and nitrogen-rich (C-N) functional groups. (C) 2015 Elsevier B.V. All rights reserved.
机译：本文对准分子激光（λ= 248 nm，tau = 15 ns）和飞秒激光（λ= 800 nm，tau = 100 fs）在ABS聚合物板上的烧蚀特性进行了研究。评估并比较了两种激光器之间的激光材料相互作用参数（烧蚀阈值，光学穿透深度和孵化因子）以及材料化学性质的变化。这项工作表明，消融阈值和有效的光穿透深度值取决于激光束的波长（光子能量）和脉冲宽度。 ABS受激准分子激光烧蚀的阈值（F-th = 0.087 J / cm（2））低于飞秒ABS飞秒激光烧蚀的阈值（F-th = 1.576 J / cm（2）），表明在影响烧蚀阈值方面，激光波长比脉冲宽度具有更主要的作用。烧蚀深度与激光能量密度的对数标度显示了fs激光烧蚀的两个线性区域，这在聚合物领域尚属未知。准分子激光烧蚀（alpha（-1）= 223 nm）的有效光学穿透深度值比飞秒激光烧蚀（alpha（-1）= 2917 nm）的有效光学穿透深度值低。由于断链过程缩短了聚合物链，烧蚀阈值随着脉冲数（NOP）的增加而降低，从而导致聚合物构型变弱，并且依赖性由孵育因子控制。 ABS的准分子激光处理通过断链过程完全消除了C = C键，而由于飞秒激光处理，由于两个激光束的光子能量不同，C = C键被部分消除。通过断链过程降低C = C键会生成自由基碳，然后这些自由基碳相互形成交联或与空气中的氧，氮和水反应，生成富氧（C-0和C = 0键）和氮-CN（CN）官能团。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第28期|467-476|共10页
  • 作者

    See Tian Long; Liu Zhu; Li Lin; Zhong Xiang Li;

  • 作者单位

    Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England|Univ Manchester, Sch Mech Aerosp & Civil Engn, Laser Proc Res Ctr, Manchester M13 9PL, Lancs, England;

    Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England;

    Univ Manchester, Sch Mech Aerosp & Civil Engn, Laser Proc Res Ctr, Manchester M13 9PL, Lancs, England;

    Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Excimer laser; Femtosecond laser; Ablation; ABS; Polymer;

    机译：准分子激光器;飞秒激光器;消融;ABS;聚合物;

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